Sounds like a classic ping‑call – a brief ring that hangs up before you can answer. These are usually used to verify active numbers for future scams or spam. If you didn't recognize the number, let it go to voicemail and ignore any follow‑up messages. Never click back‑dial links or give personal info. You can block the number in your phone settings and report it to your carrier. Keep a log of repeated attempts; a pattern may indicate a larger robocall campaign targeting New Zealand residents. Staying vigilant and using call‑blocking apps are your best defenses.
A brief ring was cut off before I could answer, leaving no voicemail; it seemed like a scam and occurred before 10 am NZ time.